#include<cstdio>
#include<algorithm>
#include<set>
#include<sstream>
#include<string>
#include<vector>
#define repi(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,a) repi(i,0,a)
#define itr(it,a) for(auto it=(a).begin();it!=(a).end();++it)

const int MAX_N = 31;

int N, S;
int P[MAX_N];
int S1[1<<16], S2[1<<16];

int main()
{
	scanf( "%d%d", &N, &S );
	rep( i, N )
		scanf( "%d", P+i );

	rep( i, 1<<(N>>1) ) rep( j, N>>1 ) if( i>>j&1 )
		S1[i] += P[j];
	rep( i, 1<<N-(N>>1) ) rep( j, N-(N>>1) ) if( i>>j&1 )
		S2[i] += P[j+(N>>1)];

	std::set<std::string> s;

	rep( i, 1<<(N>>1) ) rep( j, 1<<N-(N>>1) ) if( S1[i]+S2[j] == S )
	{
		std::ostringstream oss;
		std::vector<int> v;

		rep( k, N>>1 ) if( i>>k&1 )
			v.push_back( k+1 );
		rep( k, N-(N>>1) ) if( j>>k&1 )
			v.push_back( k+1+(N>>1) );
		rep( k, v.size() )
			oss << v[k] << (k==v.size()-1?'\n':' ');

		s.insert( oss.str() );
	}

	itr( it, s )
		printf( "%s", it->c_str() );

	return 0;
}